We took the LeBaron to drop off a friend at the airport and on the way back decided to "clear her voice" on the parkway. So I looked both ways and took it up around 90 mph. I stopped to fill up the tank and had a hard time starting back up. I eventually drained the battery and got a jump. The car started up eventually with a jump but now the engine drives like the parking break is on (no, its not engaged) when I accelerate up hill, vibrates and rumbles a little. The rumble and vibration is evident in idle as well so it isn't the drive shaft. Could any one suggest some theories? 65 LeBaron 413 Washington DC